Production of artificial bristles.



' and their' appearance are demonstrated by my present Q. can hardly be distinguished vegetable fibers are fiber) sawdust, and fibers ofthe cotton plant; jute and the like, and. also the seed pods and bark of" difierent kinds of plants and trees.. The cellulose is treated] treatment being conducted 7 either at a-"low out a g ra r imuno'nonzmowsxr/or cnannorrnnnune, enama-iwxfli rnonuc'rrou or An'rmcrn. mus'rms.

1io Drawing.

To all whom it may concern:

Be it Ilmown that I, BENNO Borzmowsxr, a subject of the Russian Emperor, residmg at l Neukantstrasse, Charlottenburg, Berhn, in the German Empire, have mvented certain new and useful Improvements in the Production of Artificial Bristles, of whlch the following vis a specification.

This invention relates to the-production of artificial bristles, designed to takethe placeof animal bristles, which are expensive and diflicult to procure, and which are still generally employed in the manufacture of bil'iushe's', 'b'rooms, polishing wheels and the li e. a

My present invention relates a new method Iof producing artificial bristles, the result being that bristles are obtamed which from ammal bristles even by experiencedbrush makers, their behavior when made up and muse practical experimentsto be almost identical with animal bristles. Moreover,the artificial bristles are very much cheaper than the real bristles andof a beautiful white appearance, an appearance which it has been found impossible to obtain in. the case of animal bristles even when the most costly processes of bleachin' are employed. I

- The arti ei lbristles made accordingv to lose derivatives with which are mixed, if

desired, foreign substances or coloring ma terials, .for instance gelatinous substances ofplant cellulose, selected ac ording to the debrist es and the use to be applied. Suitable grass (Ramie sired quality of the which they are to.

with acid such Specification ofletters Patent. Application filed February 18, 1911.

inventlon are composed of cellu- Patented Nov. 28, 1911. Serial ml 609,531. I

cording to the nature ofthe fiber. For the treatment, any acids are useful which have a dissolving action upon'vegetable cellulose,

a single acidbeingin some cases used, 1n

others a mixture of acids with or without other diluents. For instance sulfuric acid, acetic acid, nitric acid and the like are suitable. After treatment with the acid the vegetable cellulose is inthe form of a soft and almost colorless mass. colored in any desiredmannerby adding coloring materials. The soft mass is then placed in an apparatus ofv a known type by which it is tures intoa c amber or vessel ich is maintained at a'suitable temperature, and which contains suitable liquids for causing the soft bristles to set as thevemerge from the opening. Suitable liquids are water, alc0hol,.

benzin or the like. In certain cases the v1scous mass may be dropped into liquids .such'as'those just mentioned, or into others having alike action", and the resulting product' may be freed from the acid by means of water, treatment by steam or the like. It is then dried and can be afterward dissolved in suitable solvents such as-chloroform, acetone, alcohol, a mixture of ether, alcohol and camphor, or their equivalents, again reducing .it to a viscous mass'which can be made into bristles in the above manner or in some other. well-knownmanner.

ress'ed through holes or aper-.

This mass can be v i The article produced by the simple reaction r first described orth atjproduc'ed by dropping the viscous mass into a liquid and afterward dissolving it, can also be utilized for makblocks etc. by

ing rigidor semi-rigid plates, Th

treatment with steam .or otherwise.

plates, blocksor the like thus produced can be warmed and pressed by means of bydraulic presses through suitable-devices pro --vided with apertures of the required gage,

thus obtaining bristles of. anydesired length. In other cases the rigid or semi-rigid blocks,

plates or the like can have shavings orsplin-' 'ters' removed from-them by means of a suit-- able tool, which shavings or splinters constitute the bristles.

hardenedmass for forming bristles, substan tially as described.

In testimony whereof I aflix my in presence of two Witnesses. BENNO BORZYKQWSKI.

signature Witnesses WOLDEMZAR HAUPT, HENRY HASPER. 

